{"id":19652,"date":"2024-10-26T09:11:58","date_gmt":"2024-10-26T01:11:58","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/"},"modified":"2025-04-10T09:15:01","modified_gmt":"2025-04-10T01:15:01","slug":"how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/","title":{"rendered":"\u5982\u4f55\u89e3\u6c7a\u9999\u6e2f\u4f3a\u670d\u5668\u7684 NGINX 502 Bad Gateway \u554f\u984c\uff1f"},"content":{"rendered":"<p>\u5728<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/hk\/cn2\/\" target=\"_blank\">\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528<\/a>\u74b0\u5883\u4e2d\u904b\u884c\u6642\uff0c\u9047\u5230 NGINX \u53cd\u5411\u4ee3\u7406\u8a2d\u5b9a\u4e2d\u7684 502 Bad Gateway \u932f\u8aa4\u53ef\u80fd\u6703\u4ee4\u4eba\u7169\u60f1\u3002\u672c\u6307\u5357\u5c07\u6df1\u5165\u63a2\u8a0e\u5be6\u7528\u89e3\u6c7a\u65b9\u6848\uff0c\u4e26\u9644\u5e36\u5be6\u969b\u7bc4\u4f8b\u548c\u7d93\u904e\u5be6\u6230\u6aa2\u9a57\u7684\u914d\u7f6e\u3002<\/p>\n<h2><strong>\u77ad\u89e3 NGINX \u4e2d\u7684 502 Bad Gateway<\/strong><\/h2>\n<p>502 Bad Gateway \u8868\u793a\u60a8\u7684 NGINX \u4f3a\u670d\u5668\u4f5c\u70ba\u53cd\u5411\u4ee3\u7406\u7121\u6cd5\u5f9e\u4e0a\u6e38\u4f3a\u670d\u5668\u7372\u5f97\u6709\u6548\u56de\u61c9\u3002\u5728\u9999\u6e2f\u7684\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\uff0c\u9019\u901a\u5e38\u6e90\u65bc\u7db2\u8def\u5ef6\u9072\u3001\u9632\u706b\u7246\u914d\u7f6e\u6216\u8cc7\u6e90\u9650\u5236\u3002<\/p>\n<p>\u5e38\u898b\u89f8\u767c\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4e0a\u6e38\u4f3a\u670d\u5668\u7576\u6a5f<\/li>\n<li>PHP-FPM \u5957\u63a5\u5b57\u901a\u8a0a\u554f\u984c<\/li>\n<li>\u5de5\u4f5c\u9023\u7dda\u6578\u4e0d\u8db3<\/li>\n<li>\u8a18\u61b6\u9ad4\u9650\u5236<\/li>\n<li>\u7db2\u8def\u903e\u6642\u8a2d\u5b9a<\/li>\n<\/ul>\n<h2><strong>\u5feb\u901f\u8a3a\u65b7\u6b65\u9a5f<\/strong><\/h2>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u60a8\u7684 NGINX \u670d\u52d9\u72c0\u614b\uff1a<\/p>\n<pre><code>systemctl status nginx\r\ntail -f \/var\/log\/nginx\/error.log<\/code><\/pre>\n<p>\u8b93\u6211\u5011\u6aa2\u67e5\u60a8\u7684 NGINX \u914d\u7f6e\u4e2d\u7684\u6f5b\u5728\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5178\u578b\u7684\u53cd\u5411\u4ee3\u7406\u8a2d\u5b9a\uff0c\u4e26\u6a19\u51fa\u4e86\u5e38\u898b\u554f\u984c\uff1a<\/p>\n<pre><code>server {\r\n    listen 80;\r\n    server_name example.com;\r\n\r\n    location \/ {\r\n        proxy_pass http:\/\/backend_server;\r\n        proxy_buffers 16 4k;\r\n        proxy_buffer_size 2k;\r\n        proxy_connect_timeout 300;\r\n        proxy_send_timeout 300;\r\n        proxy_read_timeout 300;\r\n        proxy_busy_buffers_size 64k;\r\n    }\r\n}<\/code><\/pre>\n<h2><strong>\u5e38\u898b\u554f\u984c\u53ca\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n<p>1. PHP-FPM \u5957\u63a5\u5b57\u554f\u984c<\/p>\n<p>\u6aa2\u67e5 PHP-FPM \u72c0\u614b\u548c\u5957\u63a5\u5b57\u6b0a\u9650\uff1a<\/p>\n<pre><code>ls -la \/var\/run\/php-fpm\/php-fpm.sock\r\nsystemctl status php-fpm<\/code><\/pre>\n<p>\u5982\u679c\u7f3a\u5c11\u5957\u63a5\u5b57\u6a94\u6848\uff0c\u9a57\u8b49 PHP-FPM \u914d\u7f6e\uff1a<\/p>\n<pre><code>listen = \/var\/run\/php-fpm\/php-fpm.sock\r\nlisten.owner = nginx\r\nlisten.group = nginx\r\nlisten.mode = 0660<\/code><\/pre>\n<p>2. \u8a18\u61b6\u9ad4\u9650\u5236<\/p>\n<p>\u91dd\u5c0d\u9999\u6e2f\u4f3a\u670d\u5668\u74b0\u5883\uff0c\u6700\u4f73\u5316\u60a8\u7684\u8a18\u61b6\u9ad4\u8a2d\u5b9a\uff1a<\/p>\n<pre><code>worker_processes auto;\r\nworker_rlimit_nofile 65535;\r\nevents {\r\n    worker_connections 65535;\r\n    use epoll;\r\n    multi_accept on;\r\n}<\/code><\/pre>\n<h2><strong>NGINX \u914d\u7f6e\u6700\u4f73\u5316<\/strong><\/h2>\n<p>\u5be6\u65bd\u9019\u4e9b\u4ee3\u7406\u8a2d\u5b9a\u4ee5\u63d0\u9ad8\u7a69\u5b9a\u6027\uff1a<\/p>\n<pre><code>http {\r\n    proxy_buffer_size 128k;\r\n    proxy_buffers 4 256k;\r\n    proxy_busy_buffers_size 256k;\r\n    proxy_temp_file_write_size 256k;\r\n    proxy_connect_timeout 300s;\r\n    proxy_send_timeout 300s;\r\n    proxy_read_timeout 300s;\r\n}<\/code><\/pre>\n<h2><strong>\u7cfb\u7d71\u7d1a\u6545\u969c\u6392\u9664<\/strong><\/h2>\n<p>\u4f7f\u7528\u9019\u4e9b\u6307\u4ee4\u76e3\u63a7\u7cfb\u7d71\u8cc7\u6e90\uff1a<\/p>\n<pre><code># \u6aa2\u67e5\u7576\u524d\u9023\u7dda\u6578\r\nnetstat -anp | grep :80 | wc -l\r\n\r\n# \u76e3\u63a7\u5373\u6642\u9023\u7dda\r\nwatch -n1 \"netstat -anp | grep :80 | wc -l\"\r\n\r\n# \u6aa2\u67e5\u8a18\u61b6\u9ad4\u554f\u984c\r\nfree -m\r\nvmstat 1<\/code><\/pre>\n<p>\u5728 \/etc\/security\/limits.conf \u4e2d\u8abf\u6574\u7cfb\u7d71\u9650\u5236\uff1a<\/p>\n<pre><code>* soft nofile 65535\r\n* hard nofile 65535\r\nnginx soft nofile 65535\r\nnginx hard nofile 65535<\/code><\/pre>\n<h2><strong>\u9999\u6e2f\u7279\u5b9a\u6700\u4f73\u5316<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u6642\uff0c\u9700\u8981\u8003\u616e\u9019\u4e9b\u7368\u7279\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u8207\u4e2d\u570b\u5927\u9678\u7684\u8de8\u5883\u5ef6\u9072<\/li>\n<li>\u570b\u969b\u983b\u5bec\u5206\u914d<\/li>\n<li>\u5340\u57df\u9632\u706b\u7246\u914d\u7f6e<\/li>\n<\/ul>\n<p>\u91dd\u5c0d\u8de8\u5883\u6d41\u91cf\u6700\u4f73\u5316\u60a8\u7684 NGINX \u914d\u7f6e\uff1a<\/p>\n<pre><code>location \/ {\r\n    proxy_pass http:\/\/backend;\r\n    proxy_http_version 1.1;\r\n    proxy_set_header Connection \"\";\r\n    proxy_next_upstream error timeout http_500 http_502 http_503 http_504;\r\n    proxy_next_upstream_tries 3;\r\n    proxy_next_upstream_timeout 10s;\r\n}<\/code><\/pre>\n<h2><strong>\u76e3\u63a7\u548c\u9810\u9632<\/strong><\/h2>\n<p>\u5be6\u65bd\u6b64\u76e3\u63a7\u914d\u7f6e\uff1a<\/p>\n<pre><code>http {\r\n    log_format upstream_time '$remote_addr - $remote_user [$time_local] '\r\n                            '\"$request\" $status $body_bytes_sent '\r\n                            '\"$http_referer\" \"$http_user_agent\"'\r\n                            'rt=$request_time uct=\"$upstream_connect_time\" '\r\n                            'uht=\"$upstream_header_time\" urt=\"$upstream_response_time\"';\r\n    \r\n    access_log \/var\/log\/nginx\/access.log upstream_time;\r\n}<\/code><\/pre>\n<h2><strong>\u6545\u969c\u6392\u9664\u6e05\u55ae<\/strong><\/h2>\n<p>\u5075\u932f 502 \u932f\u8aa4\u6642\uff0c\u8acb\u9075\u5faa\u9019\u500b\u7cfb\u7d71\u65b9\u6cd5\uff1a<\/p>\n<pre><code>1. \u6aa2\u67e5 NGINX \u548c\u5f8c\u7aef\u670d\u52d9\uff1a\r\n   systemctl status nginx\r\n   systemctl status php-fpm\r\n\r\n2. \u9a57\u8b49\u65e5\u8a8c\uff1a\r\n   tail -f \/var\/log\/nginx\/error.log\r\n   tail -f \/var\/log\/nginx\/access.log\r\n\r\n3. \u6e2c\u8a66\u5f8c\u7aef\u9023\u901a\u6027\uff1a\r\n   curl -I http:\/\/backend_server\r\n\r\n4. \u6aa2\u67e5\u5957\u63a5\u5b57\u6b0a\u9650\uff1a\r\n   ls -la \/var\/run\/php-fpm\/php-fpm.sock<\/code><\/pre>\n<h2><strong>\u5e38\u898b\u554f\u984c\u89e3\u7b54<\/strong><\/h2>\n<p>\u554f\uff1a\u70ba\u4ec0\u9ebc\u6211\u7684 NGINX \u5728\u5c16\u5cf0\u671f\u6703\u8fd4\u56de 502 \u932f\u8aa4\uff1f<\/p>\n<p>\u7b54\uff1a\u901a\u5e38\u662f\u7531\u65bc worker_connections \u9650\u5236\u6216 PHP-FPM \u7a0b\u5e8f\u8017\u76e1\u5c0e\u81f4\u3002\u8abf\u6574\u9019\u4e9b\u8a2d\u5b9a\uff1a<\/p>\n<pre><code>events {\r\n    worker_connections 10240;\r\n}\r\n\r\n# php-fpm.conf\r\npm = dynamic\r\npm.max_children = 50\r\npm.start_servers = 5\r\npm.min_spare_servers = 5\r\npm.max_spare_servers = 35<\/code><\/pre>\n<h2><strong>\u6700\u7d42\u6700\u4f73\u5316\u5efa\u8b70<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\u5be6\u65bd\u9019\u4e9b\u9032\u968e\u8abf\u6574\u4ee5\u7372\u5f97\u6700\u4f73\u6548\u80fd\uff1a<\/p>\n<pre><code>http {\r\n    keepalive_timeout 65;\r\n    keepalive_requests 100;\r\n    \r\n    # FastCGI \u6700\u4f73\u5316\r\n    fastcgi_buffering on;\r\n    fastcgi_buffers 16 16k;\r\n    fastcgi_buffer_size 32k;\r\n    \r\n    # Gzip \u8a2d\u5b9a\r\n    gzip on;\r\n    gzip_comp_level 5;\r\n    gzip_types text\/plain text\/css application\/javascript;\r\n}<\/code><\/pre>\n<p>\u8acb\u8a18\u4f4f\u5b9a\u671f\u76e3\u63a7\u60a8\u7684 NGINX \u53cd\u5411\u4ee3\u7406\u6548\u80fd\uff0c\u4e26\u6839\u64da\u60a8\u7684\u5177\u9ad4\u4f3a\u670d\u5668\u9700\u6c42\u8abf\u6574\u914d\u7f6e\u3002\u9019\u4e9b\u89e3\u6c7a\u65b9\u6848\u7279\u5225\u9069\u7528\u65bc\u8655\u7406\u8de8\u5883\u6d41\u91cf\u548c\u9ad8\u4f75\u767c\u5834\u666f\u7684\u9999\u6e2f\u4f3a\u670d\u5668\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528\u74b0\u5883\u4e2d\u904b\u884c\u6642\uff0c\u9047\u5230 NGINX \u53cd\u5411\u4ee3\u7406\u8a2d\u5b9a\u4e2d\u7684 502 Bad Gateway \u932f\u8aa4\u53ef\u80fd\u6703\u4ee4 [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":3,"featured_media":19650,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[268],"tags":[],"class_list":["post-19652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-tc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u89e3\u6c7a\u9999\u6e2f\u4f3a\u670d\u5668\u7684 NGINX 502 Bad Gateway \u554f\u984c\uff1f<\/title>\n<meta name=\"description\" content=\"\u638c\u63e1\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u4e0a\u89e3\u6c7a NGINX 502 Bad Gateway \u932f\u8aa4\u7684\u6280\u5de7\u3002\u5305\u542b\u5be6\u7528\u7684\u53cd\u5411\u4ee3\u7406\u914d\u7f6e\u548c\u512a\u5316\u65b9\u6848\u7684\u7a0b\u5f0f\u78bc\u7bc4\u4f8b\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5982\u4f55\u89e3\u6c7a\u9999\u6e2f\u4f3a\u670d\u5668\u7684 NGINX 502 Bad Gateway \u554f\u984c\uff1f\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\" \/>\n<meta property=\"og:site_name\" content=\"Varidata Limited\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-26T01:11:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-10T01:15:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.varidata.com\/wp-content\/uploads\/2024\/10\/var_1026_04.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"611\" \/>\n\t<meta property=\"og:image:height\" content=\"340\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\"},\"author\":\"Varidata\",\"headline\":\"\u5982\u4f55\u89e3\u6c7a\u9999\u6e2f\u4f3a\u670d\u5668\u7684 NGINX 502 Bad Gateway \u554f\u984c\uff1f\",\"datePublished\":\"2024-10-26T01:11:58+00:00\",\"dateModified\":\"2025-04-10T01:15:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\"},\"wordCount\":29,\"publisher\":{\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.varidata.com\/wp-content\/uploads\/2024\/10\/var_1026_04.jpg\",\"articleSection\":[\"Varidata \u77e5\u8b58\u6587\u6a94\"],\"inLanguage\":\"zh-TW\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\",\"url\":\"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/how-to-fix-nginx-502-bad-gateway-for-hong-kong-servers\/\",\"name\":\"\u5982\u4f55\u89e3\u6c7a\u9999\u6e2f\u4f3a\u670d\u5668\u7684 NGINX 502 Bad Gateway 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